Upgrade flutter_rust_bridge to v2.2.0 #2157

Job	Run time
build (linux)	5m 13s
clippy (linux)	3m 24s
build (macos)	6m 37s
clippy (macos)	3m 15s
dartanalyze	58s
build (windows)	9m 6s
dartfmt	51s
clippy (windows)	5m 28s
ktfmt	8s
rustdoc (linux)	3m 1s
rustfmt	15s
swiftformat	9s
rustdoc (macos)	2m 39s
rustdoc (windows)	6m 41s
test (example, ${{ matrix.platform }})	0s
pr	0s
dart pub publish (pub.dev)	0s
release (GitHub)	0s
	47m 45s

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